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Patent Searching and Data


Title:
FUEL SUPPLY CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/097894
Kind Code:
A1
Abstract:
A fuel supply control device (8) uses, as a fuel supply amount measuring valve, a parallel flow path formed of an orifice (6) and a pressurizing valve (5), and controls a fuel supply pump (3) on the basis of the differential pressure before and after the measuring valve detected by a differential pressure gauge (7). The fuel supply control device (8) is provided with: a first control amount generation unit (8a) that generates a first control amount (S1) on the basis of the before-after differential pressure; second control amount generation units (8b, 8c, 8d) that generate a second control amount (S2) on the basis of the rotation speed of the fuel supply pump (3); a control amount selection unit (8f) that alternatively selects the first control amount (S1) and the second control amount (S2) on the basis of the rotation speed; a subtractor (8g) that calculates the deviation of the output of the control amount selection unit (8f) from a control target value; and a control calculation unit (8h) that calculates the operation amount of the fuel supply pump (3) on the basis of the output of the subtractor (8g). The control amount selection unit (8f) selects the first control amount (S1) when the rotation speed is equal to or lower than a prescribed threshold, and selects the second control amount (S2) instead of the first control amount (S1) when the rotation speed is higher than the threshold.

Inventors:
YAMAMOTO Yasuhiko (1-1 Toyosu 3-chome, Koto-k, Tokyo 10, 〒1358710, JP)
SEKI Naoki (1-1 Toyosu 3-chome, Koto-k, Tokyo 10, 〒1358710, JP)
Application Number:
JP2018/037399
Publication Date:
May 23, 2019
Filing Date:
October 05, 2018
Export Citation:
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Assignee:
IHI CORPORATION (1-1 Toyosu 3-chome, Koto-ku Tokyo, 10, 〒1358710, JP)
International Classes:
F02C9/30; F02C9/00; F02C9/28
Domestic Patent References:
WO2015029805A12015-03-05
Foreign References:
JP2013231406A2013-11-14
US20150192073A12015-07-09
US5220793A1993-06-22
JPH07217821A1995-08-18
Attorney, Agent or Firm:
NISHIZAWA Kazuyoshi et al. (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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